Question 1

In a chi-square test,the null hypothesis states that ______.

Accepted Answer

A) the two variables of interest are related in the population 
B) the two variables of interest are unrelated in the population 
C) the column frequencies equal the row frequencies 
D) the sum of the row and column frequencies equal the total frequency 
A) the two variables of interest are related in the population 
B) the two variables of interest are unrelated in the population 
C) the column frequencies equal the row frequencies 
D) the sum of the row and column frequencies equal the total frequency

Question 2

If the researcher suspects that the strength of the relationship between two variables in the population is .50 as indexed by Cramer's statistic,what sample size should she use in a study involving a 3 x 3 contingency table and an alpha level of .05 to achieve a power of .70?

Accepted Answer

A) 7 
B) 19 
C) 22 
D) 28 
A) 7 
B) 19 
C) 22 
D) 28

Question 3

To assess the strength of the relationship,Cramer's statistic is used when _____,and the fourfold point correlation coefficient is used when _____.

Accepted Answer

A) sample sizes are small;sample sizes are large 
B) both variables have two levels;one or both variables have more than two levels 
C) one or both variables have more than two levels;both variables have two levels 
D) sample sizes are large;sample sizes are small 
A) sample sizes are small;sample sizes are large 
B) both variables have two levels;one or both variables have more than two levels 
C) one or both variables have more than two levels;both variables have two levels 
D) sample sizes are large;sample sizes are small

Question 4

Because of sampling error,a chi-square computed from sample data might be _____ even when the null hypothesis is true.

Accepted Answer

A) less than 0 
B) uninterpretable 
C) greater than 0 
A) less than 0 
B) uninterpretable 
C) greater than 0

Question 5

Because the relationship between two variables can take a number of different forms,the alternative hypothesis for the chi-square test,as with the F test in analysis of variance,is directional in nature.

Accepted Answer

A) True 
 B)False

In a chi-square test,the null hypothesis states that ______.

If the researcher suspects that the strength of the relationship between two variables in the population is .50 as indexed by Cramer's statistic,what sample size should she use in a study involving a 3 x 3 contingency table and an alpha level of .05 to achieve a power of .70?

To assess the strength of the relationship,Cramer's statistic is used when _,and the fourfold point correlation coefficient is used when _.

Because of sampling error,a chi-square computed from sample data might be _____ even when the null hypothesis is true.

Because the relationship between two variables can take a number of different forms,the alternative hypothesis for the chi-square test,as with the F test in analysis of variance,is directional in nature.

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Measures of Central Tendency and Variability

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T-Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

Exam 14: Chi-Square Test

In a chi-square test,the null hypothesis states that ______.

If the researcher suspects that the strength of the relationship between two variables in the population is .50 as indexed by Cramer's statistic,what sample size should she use in a study involving a 3 x 3 contingency table and an alpha level of .05 to achieve a power of .70?

To assess the strength of the relationship,Cramer's statistic is used when _____,and the fourfold point correlation coefficient is used when _____.

Because of sampling error,a chi-square computed from sample data might be _____ even when the null hypothesis is true.

Because the relationship between two variables can take a number of different forms,the alternative hypothesis for the chi-square test,as with the F test in analysis of variance,is directional in nature.

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Measures of Central Tendency and Variability

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T-Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

To assess the strength of the relationship,Cramer's statistic is used when _,and the fourfold point correlation coefficient is used when _.